Improvement in oil-cans



UNITED STATES PATENT OFFICE.

JOSEPH F. BERENDORF, PARIS, FRANCE.

I-MPROVEM ENT ,1N OIL-CANS.

Specification forming part of'Lctters Patent No. 18,949, dated December 29, 1857.

'o all whom it may concern.:

Beit known that I, J osErI-I; FnANoIs BEE- ENDORE, of Paris, in tho Empire of France, have invented certain new and useful Improvements in Oil-Cans for Machinery Purposes; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Figure l shows an external view of Iny improved oil-can. Fig. 2 is a horizontal view or plan thereof. Fig. 3 is a section thereof taken through the line l 2 of Fig. 2. Fig. et is another section through 34.

The body or conical case A might be made of any other for1n-as, for example, of the spherical form. A hollow cylinder, B, is fixed in it at the upper part by means of aiiange, a, (see Fig. 3,) on which the cover C of the can rests. At the center of this cover a hole is made of suihcient diameter to admit the rod E of a piston, F, to pass through, which Apiston is made of leather, or of hard india-rubber, or of any other convenient material. The oil is admitted into the can through the opening D, Fig. 4, into the space existing between the external case, A, and the cylinder B. made to ascend into this cylinder through the annular space g between the bottom of the can and the edge of the cylinder B by the suction of the piston, which had been brought to its lowest position, and is made to ascend back. The opening D must be then closed air-tight by means of a cover, c, or of a screw-plug, or of any suitable piece.

The working and using of this oil-can is as follows: The person who uses the can presses with the thumb upon the disk b at the upper extremity of the rod E, so as to push down the piston and to compress more or less the helical spring d, placed on the bottom of the can,under The oil isthe piston F. The lowest position of the said piston is shown with red lines in Fig. 3. As the opening D has been closed hermetically, the air contained in the space between A and B cannot escape from the oil-can, and the oil, receiving the pressure of the piston, is forced through the only free aperture e of the case A, and it ascends through the tube f with a force depending .on the rapidity with which the pis- The elasticity oi'- ton has been pushed down. the spring d brings back the piston F to its former position, and as soon as anew pressure will be exerted upon the disk b, a new quantity of oil will ow out of the tube f. Thus as often as the piston is made to act a certain quantity of oil iiows out of the can, and is then replaced by a quantity of air. rIhis air forms a kind of elastic cushion between the oil and the piston, so that the action of my improved oil-can is as energie when the said can is al` most empty'as when it is quite full.

The principal advantages of my improved oil-can are as follows: First, it admits the employment of very fat and thick oils without rendering it necessary to heat them previously, as it is the case with common oil-cans; second, it permits to throw the oil with various forces against the parts to be lubricated, whatever their situation may be, third, my said oil-cans can be used andkeptin an inclined or horizontal position without any danger of pouring out the oil. 1

I claim as my invention The construction of oil-cans provided with an internal cylinder and piston and a spring, in the manner and for the objects substantially as above described.

J. F. BERENDORF. In presence of- ED. CoMBE, EDWIN N. ATTEIENH. 

